Medical Laboratory Scientist Jobs in USA with Visa Sponsorship
Medical laboratory scientists have strong visa sponsorship prospects because the role clearly requires a bachelor's degree in clinical laboratory science or a related field. H-1B is the standard path, and hospitals, reference laboratories like Quest Diagnostics and LabCorp, and public health labs sponsor regularly. Many positions at academic medical centers and nonprofit hospitals are H-1B cap-exempt. ASCP certification is strongly preferred by most employers and strengthens the visa petition. For detailed occupation requirements, see the O*NET profile.
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INTRODUCTION
At Houston Methodist, the Medical Laboratory Scientist position is responsible for performing both routine and complex analyses, which necessitates knowledge of laboratory techniques, principles, and equipment and their interrelationship. This position exercises good judgment by using critical thinking skills and deals with issue resolution concerning the day-to-day technical operation of the laboratory. The Medical Laboratory Scientist also ensures that specimens are accessioned and processed expeditiously in order to deliver quality laboratory results in an effective and cost-efficient manner.
FLSA STATUS
Non-exempt
QUALIFICATIONS
Education
Bachelor’s degree
Experience
One year of work or training experience in a hospital laboratory preferred
LICENSES AND CERTIFICATIONS
Required
Must meet certification eligibility upon entry into this role and have one of the following required certifications within 18 months:
- Certified as a Medical Technologist, Clinical Laboratory Scientist, Medical Laboratory Scientist, or categorical certification by Board of Certification (ASCP)
- Certified as a Medical Technologist, Medical Laboratory Scientist or Molecular Diagnostics Technologist by American Medical Technologists (AMT)
- Certified as a Clinical Laboratory Scientist by National Credentialing Agency for Laboratory Personnel (NCA)
- HLA only – One of the following is required: Medical Technologist, MT(ASCP) or Medical Laboratory Scientist, MLS(ASCP) certification Certified by American Board of Histocompatibility and Immunogenetics (ABHI)
- Microbiology only – One of the following is required: Medical Technologist, MT(ASCP) or Medical Laboratory Scientist, MLS(ASCP) certification Microbiology, M(ASCP) certification Clinical microbiology registry from American Society for Microbiology, RM(AAM)
SKILLS AND ABILITIES
Demonstrates the skills and competencies necessary to safely perform the assigned job, determined through ongoing skills, competency assessments, and performance evaluations
- Sufficient proficiency in speaking, reading, and writing the English language necessary to perform the essential functions of this job, especially with regard to activities impacting patient or employee safety or security
- Ability to effectively communicate with patients, physicians, family members and co-workers in a manner consistent with a customer service focus and application of positive language principles
- Adapts to multiple ongoing priorities including organizing heavy workflow with minimal supervision
- Strong attention to detail and ability to achieve and maintain accuracy
- Demonstrates independent judgment and discretion to recognize problems, identify causes and take corrective action
- Possesses basic computer knowledge; operates multiple computer systems to include, Hospital/Laboratory Information Systems and Office software to maintain patient and testing records and other related documents
- Demonstrates the ability to work independently with little or no direct supervision
- Ability to recognize changes that are critical to patient care
ESSENTIAL FUNCTIONS
PEOPLE ESSENTIAL FUNCTIONS
Promotes a positive work environment and contributes to a dynamic, team-focused work unit that actively helps one another to achieve optimal department results. Collaborates with all members of the patient care team by actively communicating and reporting pertinent patient care information and data in a comprehensive manner.
- Teaches students, new employees and others as assigned by Manager.
- Participates in laboratory and organization-wide initiatives.
SERVICE ESSENTIAL FUNCTIONS
Performs qualitative and quantitative tests and examination using various analyzers and/or manual methods.
- Organizes workload and sets priorities. Utilizes all available work time by assisting others and performing additional tasks.
- Meets turnaround time expectations as defined by management.
QUALITY/SAFETY ESSENTIAL FUNCTIONS
Demonstrates the six elements of competency for test systems used to generate patient test results in all areas assigned to work.
- Recognizes, investigates and helps resolve test discrepancies. When problems arise, takes appropriate action to investigate and address and notifies management and the medical director for follow-up.
- Performs instrument calibrations, validations, quality control testing, maintenance, and function checks.
FINANCE ESSENTIAL FUNCTIONS
Adjusts work schedule to accommodate departmental/organizational needs. Appropriately utilizes the time recording system.
- Uses resources efficiently; does not waste supplies. Re-stocks section inventory levels as needed.
GROWTH/INNOVATION ESSENTIAL FUNCTIONS
Seeks opportunities to expand learning beyond baseline competencies with a focus on continual development.
- Reviews and utilizes Standard Operating Procedure and offers suggestions for improvement.
SUPPLEMENTAL REQUIREMENTS
WORK ATTIRE
- Uniform: No
- Scrubs: Yes
- Business professional: Yes
- Other (department approved): No
ON-CALL
- Note that employees may be required to be on-call during emergencies (ie. Disaster, Severe Weather Events, etc) regardless of selection below.
- On Call: Yes
TRAVEL
Travel specifications may vary by department
- May require travel within the Houston Metropolitan area: Yes
- May require travel outside Houston Metropolitan area: Yes
Company Profile:
Houston Methodist Baytown Hospital brings the expertise and latest technology of Houston Methodist to Baytown and surrounding counties. The skilled and compassionate physicians, nurses and staff provide unsurpassed medical care in a close-to-home, state-of-the-art facility. Houston Methodist Baytown is committed to meeting the needs of its growing community through the ongoing facilities master plan expansion project, which includes a new, expanded emergency department, a five-story patient tower, outpatient center, renovated Cancer Center, neonatal intensive care unit and the addition of technologically advanced operating rooms.
Houston Methodist is an Equal Opportunity Employer.

How to Get Visa Sponsorship as a Medical Laboratory Scientist
Earn MLS(ASCP) certification before your job search
The ASCP Board of Certification exam is the standard credential expected by U.S. laboratory employers. Having it before you apply demonstrates that you meet U.S. clinical laboratory standards and eliminates a common hiring barrier. International graduates can apply through the ASCP's international degree route if their education meets equivalency requirements.
Target hospital systems with multiple laboratory sites
Large health systems like Mayo Clinic, Cleveland Clinic, and Mass General Brigham operate high-volume laboratories that consistently need qualified MLS professionals. These organizations have established immigration processes and the resources to support H-1B petitions. Multi-site systems may also offer transfer opportunities that provide career advancement without changing employers.
Specialize in molecular diagnostics or blood banking
Molecular diagnostics, including PCR and next-generation sequencing, is one of the fastest-growing laboratory disciplines. Blood bank specialists with SBB(ASCP) certification are also in high demand due to the complexity and critical nature of transfusion medicine. Specialized expertise creates a stronger justification for sponsorship because qualified candidates are scarce.
Consider reference laboratory positions at Quest or LabCorp
National reference laboratories like Quest Diagnostics and LabCorp employ thousands of MLS professionals across their testing facilities. Their large HR departments and legal teams are experienced in handling visa petitions. Reference labs may also offer specialized testing roles in areas like toxicology, genetics, or esoteric testing that are harder to fill domestically.
Explore public health laboratory roles at state agencies
State public health laboratories test for infectious diseases, environmental contaminants, and newborn screening. These government-funded labs may be able to sponsor H-1B visas, though eligibility varies by state. Public health lab experience is also highly valued by the CDC and federal contractors, which can open future career pathways.
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Get Access To All JobsFrequently Asked Questions
Can medical laboratory scientists get H-1B sponsorship?
Yes. Medical laboratory scientist positions typically require a bachelor's degree in clinical laboratory science, medical technology, or a related biological science, which meets the H-1B specialty occupation threshold. Hospital laboratories, reference labs, and public health laboratories hire MLS professionals and may sponsor qualified international candidates. Having your MLS(ASCP) certification strengthens the petition significantly.
What is the MLS(ASCP) certification, and is it required?
The MLS(ASCP) credential from the American Society for Clinical Pathology is the most widely recognized certification for medical laboratory scientists in the U.S. While not legally required in all states, most employers expect it as a condition of hire. The certification requires a qualifying degree and passing the ASCP Board of Certification exam, which covers clinical chemistry, hematology, microbiology, immunology, and blood banking.
Do medical laboratory scientists need VisaScreen certification?
Medical technologists and clinical laboratory scientists are on the list of occupations that may require VisaScreen certification from CGFNS for certain visa categories. The requirement applies primarily when seeking an immigrant visa or specific nonimmigrant classifications. Check the current CGFNS requirements for your specific visa pathway, as regulations can change.
Are there shortages of medical laboratory scientists in the U.S.?
Yes. The American Society for Clinical Laboratory Science has reported persistent vacancy rates in hospital laboratories, driven by an aging workforce and insufficient new graduates entering the field. This shortage means employers - particularly in rural areas and smaller hospital systems - may be more motivated to sponsor international MLS professionals. The COVID-19 pandemic further highlighted the critical need for laboratory staffing.
What is the prevailing wage requirement for sponsored Medical Laboratory Scientist jobs?
When a U.S. employer sponsors a foreign worker for a work visa, they are legally required to pay at least the "prevailing wage" — the average wage paid to workers in the same occupation, in the same geographic area, with similar experience. This is set by the Department of Labor to prevent employers from hiring foreign workers at below-market rates. The prevailing wage varies significantly by role, location, and experience level — for example, a medical laboratory scientist in California will have a different prevailing wage than the same role in a smaller state. You can look up current prevailing wage rates for any occupation and location using the OFLC Wage Search.
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